eth_newFilter - ARC

Example code for the eth_newFilter JSON-RPC method. Complete guide on how to use eth_newFilter JSON-RPC in GetBlock Web3 documentation.

This method creates a new log filter on the node. The returned filter ID is then polled with eth_getFilterChanges to retrieve matching logs as they appear. Filters are server-side and expire if not polled.

Parameters

Parameter

Type

Required

Description

filterObject

object

Yes

Filter with optional fromBlock, toBlock, address, topics

Request Example

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_newFilter",
    "params": [
        {
            "fromBlock": "latest",
            "address": "0x4cef52a8f9d4b0c8b8d5f1a2b3c4d5e6f7a8b9c0",
            "topics": [
                "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
            ]
        }
    ],
    "id": "getblock.io"
}'

import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_newFilter",
    "params": [
        {
            "fromBlock": "latest",
            "address": "0x4cef52a8f9d4b0c8b8d5f1a2b3c4d5e6f7a8b9c0",
            "topics": [
                "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
            ]
        }
    ],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://go.getblock.io/<ACCESS-TOKEN>/',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

axios(config)
    .then(response => console.log(JSON.stringify(response.data, null, 2)))
    .catch(error => console.log(error));

import requests
import json

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "eth_newFilter",
    "params": [
        {
            "fromBlock": "latest",
            "address": "0x4cef52a8f9d4b0c8b8d5f1a2b3c4d5e6f7a8b9c0",
            "topics": [
                "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
            ]
        }
    ],
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)

use reqwest::Client;
use serde_json::json;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();

    let payload = json!({
        "jsonrpc": "2.0",
        "method": "eth_newFilter",
        "params": [
                {
                        "fromBlock": "latest",
                        "address": "0x4cef52a8f9d4b0c8b8d5f1a2b3c4d5e6f7a8b9c0",
                        "topics": [
                                "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
                        ]
                }
        ],
        "id": "getblock.io"
});

    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&payload)
        .send()
        .await?;

    let result: serde_json::Value = response.json().await?;
    println!("{:#?}", result);

    Ok(())
}

Response Example

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": "0x16f1f5f5dc91c4a1d2e7e8b6c4d3f2e1"
}

Response Parameters

Field

Type

Description

result

string

Filter ID, used as input to eth_getFilterChanges and eth_uninstallFilter

Use Cases

Server-side polling of new payment events
Building event subscribers in environments without WebSocket support
Lightweight alternative to WebSocket eth_subscribe

Error Handling

Status Code

Error Message

Cause

403

Forbidden

Missing or invalid <ACCESS-TOKEN>

-32602

Invalid params

Request parameters are missing or malformed

-32601

Method not found

The method is not supported by this node

429

Too Many Requests

Rate limit exceeded for your plan

SDK Integration

import { ethers } from 'ethers';

const provider = new ethers.JsonRpcProvider('https://go.getblock.io/<ACCESS-TOKEN>/');

// Most methods are exposed directly on the provider.
// For raw access, use provider.send(method, params).
const result = await provider.send('eth_newFilter', [{"fromBlock": "latest", "address": "0x4cef52a8f9d4b0c8b8d5f1a2b3c4d5e6f7a8b9c0", "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]}]);
console.log(result);

import { createPublicClient, http, defineChain } from 'viem';

const arcTestnet = defineChain({
    id: 5042002,
    name: 'Arc Testnet',
    network: 'arc-testnet',
    nativeCurrency: { name: 'USD Coin', symbol: 'USDC', decimals: 6 },
    rpcUrls: { default: { http: ['https://go.getblock.io/<ACCESS-TOKEN>/'] } },
    blockExplorers: { default: { name: 'arcscan', url: 'https://testnet.arcscan.app' } }
});

const client = createPublicClient({
    chain: arcTestnet,
    transport: http('https://go.getblock.io/<ACCESS-TOKEN>/')
});

const result = await client.request({ method: 'eth_newFilter', params: [{"fromBlock": "latest", "address": "0x4cef52a8f9d4b0c8b8d5f1a2b3c4d5e6f7a8b9c0", "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]}] });
console.log(result);

Previouseth_newBlockFilter - ARC Nexteth_newPendingTransactionFilter - ARC

Last updated 20 days ago

Was this helpful?